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C87200 Bronze vs. 90-platinum 10-iridium

C87200 bronze belongs to the copper alloys classification, while 90-platinum 10-iridium belongs to the otherwise unclassified metals. There are 14 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C87200 bronze and the bottom bar is 90-platinum 10-iridium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 30
5.5 to 34
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 43
74
Tensile Strength: Ultimate (UTS), MPa 380
330 to 550

Thermal Properties

Latent Heat of Fusion, J/g 260
100
Specific Heat Capacity, J/kg-K 410
130
Thermal Expansion, µm/m-K 17
8.6

Otherwise Unclassified Properties

Density, g/cm3 8.6
22

Common Calculations

Stiffness to Weight: Axial, points 7.4
5.3
Stiffness to Weight: Bending, points 19
9.1
Strength to Weight: Axial, points 12
4.2 to 7.1
Strength to Weight: Bending, points 14
4.9 to 6.9
Thermal Shock Resistance, points 14
13 to 22

Alloy Composition


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Aluminum (Al), % 0 to 1.5
0
Copper (Cu), % 89 to 99
0
Iridium (Ir), % 0
9.5 to 10.5
Iron (Fe), % 0 to 2.5
0
Lead (Pb), % 0 to 0.5
0
Manganese (Mn), % 0 to 1.5
0
Phosphorus (P), % 0 to 0.5
0
Platinum (Pt), % 0
89.3 to 90.5
Silicon (Si), % 1.0 to 5.0
0
Tin (Sn), % 0 to 1.0
0
Zinc (Zn), % 0 to 5.0
0
Residuals, % 0
0 to 0.2